Patentable/Patents/US-6101117
US-6101117

Two transistor single capacitor ferroelectric memory

PublishedAugust 8, 2000
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

Patent Claims
15 claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

1. A ferroelectric memory employing transistor switches and a ferroelectric capacitor comprising: a ferroelectric capacitor having first and second plates; a write transistor device having a first node connected to a first bit line; a second node connected to said first plate of said ferroelectric capacitor; a read transistor device having a first node connected to a second bit line, a second node connected to said second plate of said ferroelectric capacitor, and a back plane connected to said second node of said write transistor device and to said first plate of said ferroelectric capacitor.

2

2. A ferroelectric memory according to claim 1 wherein said first and second bit lines are the same and said write transistor device and said read transistor device have their first nodes connected to the same bit line.

3

3. A ferroelectric memory according to claim 1 wherein said first bit line connected to said first node of said write transistor device is a write bit line and wherein said second bit line connected to said first node of said read transistor device is a sense bit line.

4

4. A ferroelectric memory according to claim 1 wherein said write transistor device further includes a gate electrode connected to a write line and said read transistor device further includes a gate electrode connected to a read line.

5

5. A ferroelectric memory according to claim 4 wherein said read line and write line are separate.

6

6. A ferroelectric memory according to claim 1 wherein said back plane of said read transistor device forms a gate region responsive to polarization of said ferroelectric capacitor.

7

7. A ferroelectric memory according to claim 1 wherein said write transistor device is a vertical structure and said read transistor device is a back plane planar structure.

8

8. A ferroelectric memory according to claim 7 wherein said back plane planar structure uses a polysilicon back plane.

9

9. A ferroelectric memory according to claim 7 wherein said back plane planar structure uses a single crystal back plane.

10

10. A ferroelectric memory according to claim 7 wherein said back plane transistor employs a W, Ti, N, WN back plane.

11

11. A ferroelectric memory according to claim 7 wherein said back plane transistor employs a refractory, high temperature and silicon and silicon dioxide compatible back plane.

12

12. A ferroelectric memory according to claim 7 wherein said transistors employ MM-single crystal material.

13

13. A ferroelectric memory according to claim 7 wherein said transistors employ a semiconductor material including GaA.sub.3, GaImA.sub.3, ImP, SiC, Ge, SiGe.

14

14. A ferroelectric memory according to claim 1 wherein said ferroelectric memory with said back plane functions as a random access NAND cell.

15

15. A ferroelectric memory according to claim 1 wherein said ferroelectric memory with said back plane functions as a random access NOR cell.

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Patent Metadata

Filing Date

Unknown

Publication Date

August 8, 2000

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Cite as: Patentable. “Two transistor single capacitor ferroelectric memory” (US-6101117). https://patentable.app/patents/US-6101117

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